Generic Keflex (cephalexin) is an antibiotic that is made to provide fast relief of bacterial infections. Generic Keflex is most often used to treat bacteria based infections in the ear, skin, and urinary tract. Generic Keflex is also used to fight infections caused by bacterial in the upper respiratory system. Generic Keflex may also be marketed as: Keflex, Cephalexin, Panixine Keflex® is manufactured by Eli Lilly.